# 店铺信息管理的视图文件
from django.shortcuts import render
from django.http import *
from myadmin.models import Shop
from django.core.paginator import Paginator
from django.db.models import Q
from datetime import datetime
import time


def index(request,pindex=1):
    """浏览信息"""
    smod = Shop.objects
    slist = smod.filter(status__lt=9)  # 只要是9状态就不显示
    # 维持搜索条件
    mywhere = []
    # 获取并判断搜索条件
    kw = request.GET.get("keyword",None)
    if kw:
        slist = slist.filter(name__contains=kw)
        mywhere.append("keyword="+kw)
    # 获取，判断并封装状态status搜索条件
    status = request.GET.get('status', '')
    if status != '':
        slist = slist.filter(status=status)
        mywhere.append("status="+status)

    slist = slist.order_by("id")  # 对id号进行排序
    # 执行分页处理
    pindex = int(pindex)
    page = Paginator(slist, 5)  # 以5条数据为一页
    maxpages = page.num_pages  # 获取最大页数
    # 判断当前页是否越界
    if pindex > maxpages:
        pindex = maxpages
    if pindex < 1:
        pindex = 1
    # 获取当前页数据
    list2 = page.page(pindex)
    # 获取页码列表信息
    plist = page.page_range
    context = {"shoplist":list2,"plist":plist,"pindex":pindex,"maxpages":maxpages,"mywhere":mywhere}
    return render(request,"myadmin/shop/index.html",context)


def add(request):
    """加载信息添加表单"""
    return render(request, "myadmin/shop/add.html")


def insert(request):
    """执行信息添加"""
    try:
        # 店铺封面图片的上传处理
        myfile = request.FILES.get("cover_pic",None)
        if not myfile:
            return HttpResponse("没有店铺封面上传文件信息")
        cover_pic = str(time.time())+"."+myfile.name.split('.').pop()
        destination = open("./static/uploads/shop/"+cover_pic, "wb+")
        for chunk in myfile.chunks():  # 分块写入文件
              destination.write(chunk)
        destination.close()

        # 店铺logo图片的上传处理
        myfile = request.FILES.get("banner_pic", None)
        if not myfile:
            return HttpResponse("没有店铺logo上传文件信息")
        banner_pic = str(time.time()) + "." + myfile.name.split('.').pop()
        destination = open("./static/uploads/shop/" + banner_pic, "wb+")
        for chunk in myfile.chunks():  # 分块写入文件
            destination.write(chunk)
        destination.close()

        #  实例化model，封装信息，并执行添加操作
        ob = Shop()
        ob.name = request.POST['name']
        ob.address = request.POST['address']
        ob.phone = request.POST['phone']
        ob.cover_pic = cover_pic
        ob.banner_pic = banner_pic
        ob.status = 1
        ob.create_at = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
        ob.update_at = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
        ob.save()
        context = {'info':"添加成功！"}
    except Exception as err:
        print(err)
        context = {'info':"添加失败!"}
    return render(request,"myadmin/info.html",context)

def delete(request,sid=0):
    """执行信息删除"""
    try:
        ob = Shop.objects.get(id=sid)
        ob.status = 9
        ob.update_at = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
        ob.save()
        context = {'info':"删除成功"}
    except Exception as err:
        print(err)
        context = {'info':"删除失败"}
    return render(request,"myadmin/info.html",context)

def edit(request,sid=0):
    """加载信息编辑表单"""
    try:
        ob = Shop.objects.get(id=sid)
        context = {'shop':ob}
        return render(request,"myadmin/shop/edit.html",context)
    except Exception as err:
        print(err)
        context = {'info':"没有找到要修改的数据信息"}
        return render(request,"myadmin/info.html",context)

def update(request,sid):
    """执行信息编辑"""
    try:
        ob = Shop.objects.get(id=sid)
        ob.name = request.POST['name']
        ob.address = request.POST['address']
        ob.phone = request.POST['phone']
        ob.status = request.POST['status']
        ob.update_at = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
        ob.save()
        context = {'info':"修改成功"}
    except Exception as err:
        print(err)
        context = {'info':"修改失败"}
    return render(request,"myadmin/info.html",context)